Miter-box



UNITED STATES PATENT OFFICE ASA F. TARR, 0F ROCKPORT, MASSACHUSETTS.

MITER-B OX.

Specification of Letters Patent No. 22,386, dated December 21, 1858.

To all whom it may concern:

Be it known that I, Asa F. TARR, of Rockport, in the county of Essex and State of Massachusetts, have invented a new and useful Improvement in Miter-Boxes for the Use of J oiners and other Artisans in `Wood; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this speciiication, in which- Figure l, is a longitudinal vertical and central section ot' my invention. Fig. 2, is a transverse vertical section of ditto, taken in the line m, Fig. l. Fig. 3, is a horizontal section of ditto, taken in the line y, y, Fig. l.

Similar' letters of reference indicate corresponding parts in the several gures.

To enable those skilled in the art to t'ully understand and construct my invention I will proceed to describe it.

A, represents an ordinary miter box con structed by securing two vertical and parallel side pieces c, a, to a bottom board I), and sawing vertical kerfs in them, one c', being at right angles with the side pieces and the others, c', c, oblique with the side pieces form angles of 450. This miter box being of usual construction and well known does not require a more minute description.

B, represents four vertical guides which are attached two to each side ot` the box A, and have their upper ends connected by cross ties d. These guides forni a framing in or between which two parallel plates C, C, are placed, said plates being co-nnected by cross ties and allowed to slide freely up and down. The plates C, C, are placed in vertical planes just at the outer sides of the side pieces a, cz, of the box A, and each plate C, has vertical slots or kerfs d, cZ, d', made in it which corresponds precisely with the kerfs c, d, c. The upper ends of the slots or kerfs (Z, are enlarged or, they have openings made ot' sufficient dimensions to allow' the back or bar e of the saw D, shown in red, to pass through. The saws used for sawing miters are provided with a metal bar e, in order to stiften them, see Figs. l and 2. The plates C, are made of such a depth as not to extend down quite to the teeth of the saw, the teeth therefore cannot be injured by being brought in contact with the plates C, which may consequently be of metal or the slots or kerts (Z, may be lined with metal.

The operation willv readily be seen. The stick E, to be operated upon is placed in the box A, as usual and the saw D, is fitted in the proper slots cl', ot' the plates C. The saw rests upon the stick and passes into the corresponding slots c', of the box A. Tie slots or kerfs d, serve as the guides to the saw, the bar e, retaining the saw in the slots or kerfs d, and the plates C, descend as the saw cuts and as the slots or kerfs d, cl, d, are not acted upon by the saw teeth they will consequently be kept perfectly true and when the slots or kerfs c, c', c', of the box A, are cut by the saw teeth it will not aitect the accuracy of the implement for the kers in the plates C, serve as guides. The implement therefore cannot be injured by use as the ordinary initer boxes.

The same plan may be carried out for sawing miters in a direction oblique with a vertical line by having standards g, g, pivoted at their lower ends, said standards having va sliding guide frame F, attached, and the desired inclination being given the saw by adjusting the standards.

Having thus described my invention, I claim as an improved article of manufacture,

A initer box having a sliding :trame F, attached to pivoted standards (g), and otherwise made as herein shown and described.

ASA F. TARE.

IVitnesses Asa TARR, GEORGE 7. DADE. 

